Connor and Walker catch up with Harwood, but struggle to establish the fate of his wife.
A mother returns home from work to find her baby girl has died and that her nanny has disappeared. DCI Connor and the team discover that the nanny has a long history of identity theft, and are determined to find her before she takes up another position.
While the nanny is on the run, the team discover that another child in her care had also died. Ch. Supt. Walker wants to exhume the body, but the father is obstructive.
A discovery at a sawmill provides a vital clue to the fate of the missing woman. Walker is troubled by his ex-wife's boyfriend and the appearance of his estranged brother.
DS Satchell is desperate to save his wife and child, and wants Walker to confront the gang, but the superintendent is wary of the mole he believes to have been leaking intelligence to the Bilkins. Walker and Connor are under pressure to find the evidence to bring down the family before Satchell can take the law into his own hands.moreless
A shop manager is shot during a jewellery raid, and an accomplice to the killers turns informer, revealing the culprits to be a notorious crime family - but then the informant is himself shot dead. DS Satchell witnesses the crime, and soon finds that his life and that of his family are in danger, but can find no safety from the influence of the crime family who wish to keep him silent.moreless
The prosecution case against Dunn starts to fall apart, but a witness called by the defence sets detectives on a hunt for an item that may have been used in the attack.
The apparently happy Harrogate family is torn apart when the parents return home to discover their daughter, Emily, dead. Connor and Satchell begin to sift through the case and discover that the family isn't as stable as it first appeared. Connor appeals to Walker for some backup,but he is having problems of his own with his son Richard. Secrets are soon discovered and fragile relationships are tested in the process of ensuring justice is done.moreless
A severed female hand is found in the Thames, which brings Detective Chief Inspector Roisin Conner in contact with Chief Superintendent Walker, who is now back in uniform after being found innocent at his murder trial. No body is discovered, and the case soon becomes a battle of wits against the killer, who has cleverly planned for every outcome in a bid to escape justice for his crime.moreless
A young prostitute, Angela Dutton, plunges to her death from the eleventh floor balcony of a block of flats. The police begin a murder enquiry and discover that she was the daughter of a seventies TV star who was also found murdered twelve years earlier, wrapped in blue eiderdown. The killer was never found. D.C.S. Walker heads the investigation into the two murders, with the aid of D.C.I. Connor and the rest of the team. They investigate to find out why Angela Dutton died - did she find her mother's killer, or did one of her three high-paying clients kill her?moreless
Jonathan Southwood confesses to his relationship with Angela Dutton, but denies murder. DCI Connor's life is at risk when she goes undercover at a private members' club.
The murder of a police commander and his magistrate wife puts Walker, Connor and the team under pressure to get a quick result. Jewellery is missing from the house, which would indicate a burglary gone wrong, but several relatives profit from their deaths and so they focus the investigation on the family. Connor is suspicious of the identical twin sons in particular and suspects that they may have worked together in order to get away with patricide.moreless
A fifteen-year-old girl goes missing and her blood-stained clothes are found. Det. Supt. Walker heads the investigation into her murder. Meanwhile, D.I. North is sent to see a persistent complainer, Warrington, who has been hounding the station. North begins to get stalked and Walker has a prime suspect for the murder. But then they find a connection between Warrington and Walker's prime suspect.moreless
A man vanishes while on his honeymoon in London, leaving his wife Susan distraught and franticly searching for him. Her father contacts Detective Chief Superintendent Michael Walker, believing the police aren't taking the case seriously, but there's very little evidence to suggest foul play. However, someone is noticed on CCTV who arouses suspicions.moreless
Damon Morton is on trial for murder, but his strange hold over those he knows makes securing a conviction problematic.
When Susan Harrow does not come home, her mother reports her missing to the police. Her body is later discovered on waste land and a murder investigation is launched, once again headed by Det. Supt. Walker. There is later a second murder and they know that they have a serial killer on their hands.moreless
Andy Harper hangs himself and Darren reveals that they had been lovers. Darren is acquitted of murder, but DCI Connor remains convinced of his involvement in the girl's death.
D.I. North investigates when a mother is snatched from a wood, but the confession of a local sex offender complicates matters. Detective Chief Superintendent Walker is little help, as he has worries of his own.
New eye-witness testimony and a television documentary about the McCready case casts doubt on the original murder investigation. Det. Supt. Walker is suspended from duty, and decides to return to Glasgow to find new evidence to prove his innocence, in order to save his career, relationship and reputation.
With the death of her only suspect and with no real leads, Connor finds herself under pressure from Ch. Supt. Walker and increasingly drawn to profiler Max Stanford.
A young school girl is raped and murdered, but D.C.I. Connor still has no leads a month into the investigation. When Walker orders a review of unsolved cases, they turn up similar cases of raped and murdered teenage girls over the last ten years, and they find themselves searching for an apparent serial killer.moreless
As DCI Connor tries to establish the events leading up to Emily's death, Michael's alibi starts to crumble. Richard Walker is arrested.
The diary of the missing woman suggests that she was being stalked by her brother-in-law, but when their authenticity is questioned, Ronnie is released. Walker belatedly realises that one of the brothers plans to murder the other.
Police question the man identified from CCTV footage, but when he is released he lures the distraught bride to a meeting on the pretext of reuniting her with her husband. The detectives must find track him down before he kills again.
Walker is assigned to investigate the discovery of a 17-year-old skeleton, which he isn't too happy about - especially as he's working with D.I. North's ex-boyfriend. They soon discover more skeletons buried at the house.
A five-year-old girl goes missing and the police are called in to search. When her body is found inside a sewage pipe, it becomes a murder investigation, which is headed by Detective Superintendent Walker. They follow a few leads and eventually arrest a suspect, who is then sent to trial.
DCS Walker goes on leave back to Glasgow, where he is taking care of his increasingly senile mother, and soon becomes involved in the case of a missing woman, who is the sister of an old friend. Walker begins to delve into the life of her then-husband Kevin Reid — whose second wife has also been reported missing — and discovers a dark bond between him and his brother Ronnie. Soon a body is discovered and it is proved to be that of the first wife.moreless
Another prostitute is prosecuted for an assault on Malikov. While Walker is obsessed with bringing the Ukrainian to justice, DCI Connor refocuses the investigation with a view to finding Sofia's real killer.
The body of a teenage girl, Maria Cole, is discovered in a chalk pit, and the tracks of three different vehicles are discovered at the crime scene. They eventually lead D.C.I. Connor and D.C.S. Walker to the local hardman, Ray Harper. His son Andy and his friend Darren admit being at the pit on the same night, though they claim that they never saw the girl there. However, cracks soon appear in their story when CCTV footage reveals that they crossed paths with Maria before her death, leading to the two boys being charged with her murder.moreless
A suitcase is found abandoned at Heathrow Airport, and panic ensues, but it is soon discovered to be no terrorist threat. Inside is the naked body of Sofia Petrenko, a high-class prostitute, who has been strangled to death. The suitcase is traced to Vitali Malikov, a Ukrainian billionaire who admits to hiring Sofia's services, but he claims she was alive when she left him and that the case was a gift. D.C.S. Walker arrests Malikov on suspicion of murder, but then has to release him, and soon realises he has become a pawn in a much bigger game.moreless
A well-known paediatric surgeon, Jonathan Carlisle, is found dead, and D.C.I. Connor uncovers a conflict stirred up following a recent operation which resulted in a young girl's death. They soon discover the girl's father, Gary Webster, was the subject of a restraining order issued by Carlisle, and that he had been stalking him for months. Webster disappears before he can be questioned, a game of cat and mouse ensuing, and he is eventually cornered, but that leads to further complications.moreless
Warrington, increasingly unstable, abducts D.I. North and takes her to the site where Cassie Booth is buried. The case against him should be straightforward, but questions remain as to Wilding's involvement.
D.I. North re-investigates an eight-year-old murder case and finds that Det. Supt. Walker was in charge of the original inquiry. The man convicted of murder continues to assert his innocence.
It now appears that a serial rapist is attacking white women with black boyfriends, and Walker hopes to use the boyfriend of a murder victim to help bring the black community on side, but the man once again becomes a suspect. Connor's relationship with a barrister threatens to jeopardise the investigation and trial.moreless
A woman is raped and murdered and her boyfriend is found covered in blood but he claims not to recall what happened. When enquiries appear to clear him of any involvement, Walker brings him in to the investigation as a witness.
Imogen attempts to flee the country to escape the attentions of the drug-dealers. Connor has an unhappy time assigned to the drugs squad, and her relationship with DCI McGill threatens to undermine the investigation.
A young girl falls from a ferris wheel to her death at the local fair, which is initially thought to be nothing more than a tragic accident. But then Satchell's aunt, who is a fortune teller at the fair, approaches the team saying she believes there is more to it. Before long a second death occurs, and her suspicions seem justified, leading the team into a murder inquiry.moreless
Despite the murder of the fairground owner, police find the fairground workers uncooperative, and efforts to implicate the property development company are initially inconclusive. Walker elects to concentrate police efforts on the death of the ferris wheel victim.
An ambulance is run off the road and the patient being transported inside is shot in the head. The victim is revealed to be Sebastian Cole, and the media interest is high as he was engaged to Imogen Buller-Turi, who was a favourite with the tabloids, prompting Walker to intrude on Connor's investigation as it becomes clear that the murder is not a simple case of road rage, which leads Connor to reluctantly accept an alliance she would rather not commit to.moreless
Walker charges the mother of the mummified baby with the murders, but D.S. Satchell wonders whether the father should also be charged.
DS Satchell persuades Nick Fisher's widow to implicate Terry Dyer in the murder of Nick Fisher, and seems hopelessly compromised when Ken Randle confesses. DCS Walker unearths some crucial evidence relating to the muder of Mark Randle twelve years before, while Sarah Randle tells him what really happened on that fateful night.moreless
With their prime suspect dead, Connor and the team uncover some unpleasant aspects of Carlisle's private life which suggest that his adultery, rather than his professional career, provided the murderer with motive for revenge.
Terry Dyer has been recently released from prison, where he was imprisoned for a crime he still maintains he did not commit, and he returns to his East London estate in search of the truth. The father of the victim he was convicted of killing, Ken Randle, confronts and wounds him. DCS Walker is sympathetic to Ken's situation and releases him on bail, and then Ken soon becomes doubtful of Dyer's guilt, growing convinced that a friend of his son's was involved in his murder.moreless
Walker is determined to break the twins' alibi, but it is the discovery of the murder weapon that provides the breakthrough.